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MCP2221 数据表(PDF) 55 Page - Microchip Technology

部件名 MCP2221
功能描述  USB 2.0 to I2C??UART Protocol Converter with GPIO
PDF  80 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP2221 数据表(HTML) 55 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS20005292B-page 55
MCP2221
17
Current supplied-password byte 4
18
Current supplied-password byte 5
19
Current supplied-password byte 6
20
Current supplied-password byte 7
21
Current supplied-password byte 8
22
GP0 settings
Bit 7-5
Don’t
care
Bit 4: GPIO Output value
When the GP0 is set as an output GPIO, this value will
be present at the GP0 pin
Bit 3: GPIO Direction (Input/Output) –
Works only when GP0 is set for GPIO
operation
1
GPIO Input mode
0
GPIO Output mode
Bit 2-0: GP0 Designation
111-011 Don’t care
010
Alternate function 0 (LED UART RX)
001
Dedicated function operation (SSPND)
000
GPIO operation
23
GP1 settings
Bit 7-5
Don’t
care
Bit 4: GPIO Output value
When the GP1 is set as an output GPIO, this value will
be present at the GP1 pin
Bit 3: GPIO Direction (Input/Output) –
Works only when GP1 is set for GPIO
operation
1
GPIO Input mode
0
GPIO Output mode
Bit 2-0: GP1 Designation
111-101 Don’t care
100
Alternate function 2 (Interrupt Detection)
011
Alternate function 1 (LED UART TX)
010
Alternate function 0 (ADC1)
001
Dedicated function operation (Clock Output)
000
GPIO operation
24
GP2 settings
Bit 7-5
Don’t
care
Bit 4: GPIO Output value
When the GP2 is set as an output GPIO, this value will
be present at the GP2 pin
Bit 3: GPIO Direction (Input/Output) –
Works only when GP2 is set for GPIO
operation
1
GPIO Input mode
0
GPIO Output mode
Bit 2-0: GP2 Designation
111-100 Don’t care
011
Alternate function 1 (DAC1)
010
Alternate function 0 (ADC2)
001
Dedicated function operation (USBCFG)
000
GPIO operation
TABLE 3-39:
RESPONSE 1 STRUCTURE (CONTINUED)
Byte
Index
Function Description
Value
Effect



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